As a department of the United States Department of Agriculture (USDA) the National Agricultural Statistics Service (NASS) continually surveys and reports on U.S. agriculture. NASS reports include production and supplies of food and fiber, prices paid and received by farmers, farm labor and wages, farm finances, chemical use, and changes in the demographics of U.S. producers. NASS provides objective and unbiased statistics of states and counties, while safeguarding the privacy of farmers and ranchers.

CIESIN is an interdisciplinary research and data center that provides access to a wide range of global data, associated documentation, and visualization and analysis tools to improve understanding of human interactions in the environment.

The Census of Agriculture provides extensive data about U.S. agriculture at the country, state and county level. The census is conducted every 5 years, and it gathers uniform, detailed data about U.S. farms and ranches and their operators. Data from recent censuses are available in different formats, but historical censuses (back to 1840) are available in pdf format.